package com.zhixi.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.zhixi.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

/**
 * @ClassName WebMvcConfig
 * @Author zhangzhixi
 * @Description
 * @Date 2022-7-8 10:47
 * @Version 1.0
 */
@Slf4j
@Configuration
// 接口文档注解
@EnableSwagger2
@EnableKnife4j
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /**
     * 设置静态资源映射
     *
     * @param registry 注册器
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射。。。");
        //访问路径，映射到真实的路径（映射的真实路径末尾必须添加斜杠`/`）
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        // 设置接口文档的访问路径
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    /**
     * 扩展mvc框架的消息转换器
     *
     * @param converters 消息转换器列表
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {

        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转化器，底层使用jackson将java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合当中(index设置为0，表示设置在第一个位置，避免被其它转换器接收，从而达不到想要的功能)
        converters.add(0, messageConverter);
    }

    /**
     * 接口文档配置
     *
     * @return Docket
     */
    @Bean
    public Docket createRestApi() {
        // 文档类型
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                // 扫描接口所在的包
                .apis(RequestHandlerSelectors.basePackage("com.zhixi.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * 接口文档配置
     *
     * @return ApiInfo
     */
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("瑞吉外卖")
                .version("1.0")
                // 作者
                .contact(new Contact("zhangzhixi", "www.cnblogs.com/zhangzhixi", "1820712542@qq.com"))
                .description("瑞吉外卖接口文档")
                .build();
    }
}
